Honda Accord Eleventh Generation (2023-present) fuel economy dropped significantly why

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical issues during repairs.

2. Address Fuel System Issues

1. Check Fuel Filter

   • Locate the fuel filter; refer to the service manual for specific location details.
   • Use appropriate line wrenches to disconnect the fuel lines safely.
   • Remove the old fuel filter and install the new one, ensuring all connections are tight.
   • Reconnect the fuel lines and check for leaks.

2. Inspect and Replace Spark Plugs

   • Remove the ignition coil(s) to access the spark plugs.
   • Use a spark plug socket to remove the old spark plugs.
   • Check the gap on the new spark plugs and adjust if necessary.
   • Install the new spark plugs and torque them to the manufacturer’s specifications.

3. Air Intake System Maintenance

1. Replace Air Filter
   • Open the air filter housing and remove the old air filter.
   • Inspect the housing for debris and clean it if necessary.
   • Install the new air filter, ensuring it is properly seated in the housing.

4. Tire Inspection and Adjustment

1. Check Tire Pressure
   • Use a tire pressure gauge to measure the pressure in all tires.
   • Inflate tires to the manufacturer’s recommended pressure levels.
   • Inspect tires for uneven wear and replace if necessary.